That is way oversimplified. As has been pointed out, negative campaigning works both ways. They would be foolish not to hammer the impeachment for all its worth. The dems are clearly discussing issues. They concentrate more on health care, education, infrastructure, the judiciary, and the like
The house looks to be dragging this out. They are going to drag out Mueller and all the witnesses from that investigation. They are going to drag out all the Ukraine stuff. History repeatedly shows that more skeletons come out of the closet like Lewinski, emails, and secret white house tapes.
Now granted McConnell is going to likely try to fast track it through the senate but we will have to see. Roberts will oversee the proceedings there.